Hi All,Currently I am using the Zimbra Collaboration opensource 8.7.7 and for this version I am using the Zextras Migration Tool 2.4.11 to till date there is no issue with this both. Now I plan to upgrade theZimbra Collaboration opensource version from 8.7.7 to 8.8.11 for this 8.8.11 the Zextras Migration Tool is not supporting can any one have any idea for this solution for how to migrating the zimbra 8.8.11 using with Zextras tool or any other opensource tool.